# Calculate A+B-C+D

Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D!Correct answers:

**15**The first user who solved this task is

**Nasrin 24 T**.#brainteasers #math